Flour-bolt



" (No Model.)

' Patented May 9, |899.

J. CHARLES.

FLOUR BOLT.

(Application led Jan. 16, 1899.)

` 2 sham-snm W/TNESSES.'

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A TTOHNEYS.

Patented may 9, |399.

J. CHARLES. FLou BoLT. v(Appleation led Jan. 16, 1899.)

2 Sheets-Sheet 2.

(No Model.)

W/TNESSES A TTOHNE YS.

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lNITE rares i JOHN CHARLES, OF CHARLTON, MARYLAND.

FLOUR-BOLT.

SPECIFICATION forming part of Letters Patent No. 624,752, dated May 9, 1899.

Application filed January 16 1899. Serial No'. 702,282. (No model.) n

T0 cir/ZZ when?, it may concern."

Be it known that I, Jol-1N CHARLEs, residing at Charlton, in the county of Washington and State of Maryland, have made certain new and useful Improvements in Flour-Bolts, of which the following is a specification.

My invention is an improvement in flourbolts, and has for a special object to provide improved constructions whereby the gyratory movements of the sieve-boxes, which are arranged one above the other,.may be caused to compensate one for the other to avoid the jar which would otherwise result and also to reduce to a minimum the wear on the eccentrics and shafts and their bearing; also, to provide improvements in the constructions forsupporting and operating the sieve-frames and to furnish other improvements, as will be hereinafter more fully described, and pointed out in the claims.

In the drawings, Figure l is a perspective view of my improved apparatus. vertical longitudinal section on about line 2 2 of Fig. 1. Fig. 3 is a cross-sectional view on a horizontal plane on about line 3 3 of Fig. 2, the sieve-boxes being removed. Fig. 4 is a perspective view illustrating a portion of the upper sieve-frame andthe props which support the same detached, and Fig. 5 is a detail View illustrating one of the brackets and the portion of the lower sieve-frame to which it is connected.

In carrying out my invention I provide a main frame A, which is provided with the opposite side frames having the base portion B, on which are rested the lower ends of the props C, and the upright portions D, which are cut out at D to receive thev lower eccentrics and the pulleys, which may be geared with a suitable power. In the side frames I journal the shafts E, which are provided with the lower eccentrics F and the upper eccentrios G. The eccentrics F of each shaft project in diametrically opposite directions to the eccentrics G of the same shaft, and the eccentrics of each shaft project in the same direction or extend on lines parallel to those of the corresponding eccentrics of the other shaft, as will be understood from Figs. 2 and 3. The lower eccentrics F operate the lower Fig. 2 is a per sieve-box is thrown in one direction the y lower sieve-box will be thrown in the opposite direction, the jar of one tending to counteract that of the other, as will be understood from the drawings.

The upper sieve-box H is secured rigidly to the beams K, while the lower sieve-box I is provided centrally with a depending stud 7l, which fits in a socket i' in the lower frame J, as shown in Fig. 2.

The props C rest at their lower ends, at C", on step-bearin gs upon the base Bv and at their upper ends, at C2, beneath the beams VK. These props' C partake at their upper ends of thev gyratory movement given to the upper sieve-frame by the eccentrics on the shaft, as will be'understood from Fig. l.

`To cause the movements of the upper and .lower sieve-fran1e to be transmitted directly to each other, I provide the flexible or cordlike connections M between the several corners of the upper'and lower frames, 'such ,cords M serving in a measure to suspend the lower sieve-frames from the upper frame, as will be understood from Fig. l. In practice it is desired to regulate the length of the connections M according to the speed of the motion given/to the sieve-frames, making the connections shorter as the speed is increased, it being desired to use a short connection when the speed is rapid and a longer connection when the sieve-frames are operated at a low rate of speed. To secure this adjustment, I provide the brackets N, which are secured adj ustably to the lower sieve-frame at N and are provided at N2 with the guide-openings through which the cords M are passed. By this means the brackets N can be adjusted up or down and so vary the length of the swngf ing portion of the cords M. It will also be noticed that this result is accomplished without varying the distance between the upper and lower sieve-frames.

In operation motion is given to one of the shafts E by means of a belt applied to the pulley e of such shaft, as indicated in dotted lines, Fig. l. I also prefer to connect the opposite shafts E by a belt c' and by a pitman e2, connecting cranks c3, as is best shown in Fig. 2. The use of the pitman instead of a bevel-gear cheapens the construction and reduces the noise incident to the operation of the machine. A pin g is secured to each of the top cross-beams K and fits in a socket or opening g', formed centrally in the eccentric G.' This pin, in connection with the pitman, operates to give the machine a positive motion.

While my invention will be found useful in ilour-bolts,it is not confined to such use, but may be embodied in scalpers, graders, separators, and other like machines. The sieveboxes can be adjusted on their frames by any suitable means to vcause the material to be separated to pass from one end to the other and discharge at such other or lower end.

By arranging the sieve-boxes each to compensate for the thrust of the other less power l is required to run the machine and the friction on the bearings is greatly reduced.

An important feature of my invention is that the entire machine will run with but slight friction, and therefore requires but little power and can be run at a high rate of speed.

Having thus described my invention, what I claim, and desire to secure by Letters Pat-y 1. The combination substantially as described of the mainframe provided with bearings for the opposite shafts, the upright shafts journaledin said bearings and provided each with two eccentrics, those of each-shaft being arranged diametrically opposite each other and the eccentrics of one shaft being projected or extended on lines parallel to those of the corresponding eccentrics of the other shaft, the upper sieve-carrying frame having straps encircling the upper eccentrics, the lower sievecarrying frame having straps encircling the lower eccentrics, the flexible connections between the upper and lower frames, the adjustable brackets for adjusting said connections and the props bearing at their upper scribed.

3. In an' apparatus substantially as Adei scribed the combination of the main frame, the upper and lower sieve-boxes extended longitudinally in directions at right angles to each other, means for giving said sieve-boxes gyratory movements in opposite directions and flexible connections between said upper and lower sieve-boxes` whereby the throw of each sieve-box in any direction will be coun-v teracted by the throwof the other sieve-box in the opposite direction substantially as set forth.

4; In an apparatus substantially as described the combination of the-main frame having the side portions provided with the base and upright portions, the-shafts journaled in the upright portions and provided with the eccentrics, the props mounted at their lower ends on the base portions of the side frames,the upper and lower sieve-frames, the upper sieve-frame being rested upon the upper ends of the props and the lower frame being suspended from the upper frame, such upper and lower frames being provided with straps encirclingv the eccentrics of the shafts,

vandconn'ections between the said shafts substantially asset forth.

5. In an apparatus substantially as'de- Ascribed the combination with the framing, the upper and lower sieve-frames each having straps for the eccentrics, the shafts having eccentrics fitted to the straps of the upper and lower frames, the upper eccentrics having central sockets, pins projecting from the upper sieve-frame and entering the central sockets of the upper eccentrics, and the pitman connection between the opposite shafts substantially as set forth.

JOHN CHARLES. Witnesses J. O. SNYDER, HARRY K. MUMMA. 

